Verses with the word imaginations in the Old Testament (4 verses):

1 Chronicles 28:9
And thou, Solomon my son, know thou the God of thy father, and serve him with a perfect heart and with a willing mind: for the LORD searcheth all hearts, and understandeth all the imaginations of the thoughts: if thou seek him, he will be found of thee; but if thou forsake him, he will cast thee off for ever.

Proverbs 6:18
An heart that deviseth wicked imaginations, feet that be swift in running to mischief,

Lamentations 3:60
Thou hast seen all their vengeance and all their imaginations against me.

Lamentations 3:61
Thou hast heard their reproach, O LORD, and all their imaginations against me;